Frequencies for d_4_irf_c11_56 variable in prds_hosp10_yr2010 dataset :

d_4_irf_c11 |
        _56 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |          1        0.04        0.04
          2 |          1        0.04        0.09
          9 |          1        0.04        0.13
         13 |          1        0.04        0.17
         22 |          1        0.04        0.22
         37 |          1        0.04        0.26
        246 |          1        0.04        0.30
          . |      2,316       99.70      100.00
------------+-----------------------------------
      Total |      2,323      100.00

by Jean Roth , jroth@nber.org , 24 Aug 2018